1. Widespread group including duck-billed dinosaurs and their early relatives (hadrosaurs, trachodon and iguanodon)
   - Euronithopoda, suborder Euronithopoda, euronithopod, suborder Ornithopoda

Type of: animal order

Part of: order Ornithischia, Ornithischia

Encyclopedia: Ornithopoda

• registrant
• registrar
• registration
• registration fire
• registration number
• registry
• Regius professor
• Reglaecus
• reglet
• regnal
• regnant
• regnellidium
• Regnellidium diphyllum
• rego
• regorge
• regosol
• regrade
• regress
• regression
• regression analysis
• regression coefficient
• regression curve
• regression equation
• regression line
• regression of y on x